DATA FLOW DIAGRAM

Topics: Data flow diagram, Flow diagram, Dataflow Pages: 8 (375 words) Published: December 4, 2014
DATA FLOW
DIAGRAM
Group#7
Nugao
Oserin
Obongen

The Data Flow Diagram (DFD)
• a graphical representation of the flow of data through an information system. It enables you to represent the processes in your information system from the viewpoint of data. The DFD lets you visualize how the system operates, what the system

accomplishes and how it will be implemented, when it is refined with further specification.
• Data flow diagrams are used by systems analysts to design information-processing systems but also as a way to model
whole organizations. You build a DFD at the very beginning of your business process modeling in order to model the functions your system has to carry out and the interaction between those functions together with focusing on data exchanges between

processes. You can associate data with conceptual, logical, and physical data models and object-oriented models.

System Data Flow Diagram For Online
Student Portal for Juliever Academy

Administator Data FlowDiagram

Log-In

Authenticate User

View Profile

Retrive Profile from DB

Selects Activity Log

Collect Activity Log
from DB

View Activity Log
Selects Announcements
Modify Announcements

Modify Announcements
from DB

View Announcements

 
Collect Announcements
from DB

Selects Faculty

Modify Faculty from DB

Modify Faculty
View Faculty
Selects Students
Modify Students

 

  Collect Faculty from DB
Modify Students from
DB

View Students

 
Collect Students
from
DB

Selects Student Grades

Modify Student Grades
from DB

Modify Student Grades
View Student Grades
Log Out

 
Collect Student
Grades
from DB

Faculty Data Flow Diagram

Log-In

Authenticate User

View Profile

Retrive Profile from DB

Selects Personal Info

Modify Personal Info
from DB

Modify Personal Info

 

View Personal Info

Collect Personal Info
from DB

 
Selects Student Grades

Modify Student Grades
from DB

Modify Student Grades

 

View Student Grades

Collect Student Grades
from DB

Log Out

Student Data Flow Diagram

Log-In

Authenticate User

View Profile

Retrive Profile from DB

Selects Personal Info

Modify Personal Info
from DB

Modify Personal Info

 

View Personal Info

Collect Personal Info
from DB

Selects Grades
ViewGrades

Log Out

 

Collect Grades from DB

Parent Data Flow
Diagram
Log-In

Authenticate User

View Profile

Retrive Profile from DB

Selects Personal Info

Modify Personal Info
from DB
 

Modify Personal Info
View Personal Info

Selects Grades

View Grades

Log Out

 

Collect Personal Info
from DB

Collect Grades from DB

Thank You 

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